Carbureter.



E. G. BUCHMANN.

CARBURETER.

APPLICATION FILED MAY 3. 1911.

1,276, 1 69 Patented Aug. 20, 1918.

lltl tit) EDWARD e. euenmnmv, or iurnwnumn, WISCONSIN.

CARB'URIETER.

Application filed May 3, 1917.

To all whom it may concern Be it known that I, EDWARD G. BUCH- ZMANN, acitizen of the United States, and resident of Milwaukee, in the countyof Milwaukee and State of Wisconsin, have invented certain new anduseful Improvements in Carburetors; and I do hereby de ,clare that thefollowing is a full, clear, and

provision of a carbureter having situated intermediate its float chamberand vaporizing chamber an electrical heating unit for heating the liquidfuel as it passes into the carbureting chamber.

A further object of my invention is the provision of a carbureter soequipped with an electrical heating unit which will be of exceedinglysimple construction and inexpensive to manufacture.

lVith the above and other objects in View which will appear asthedescription proceeds, my invention resides in the novel combination,construction and arrangement of parts, as hereinafter described and moreparticularly defined by the appended claim, it being understood thatsuch changes in the precise embodiment of the invention herein disclosedmay be made as come within the scope of the claim.

In the accompanying drawings, a single view, part in section and part inelevation, is shown illustrating a carburetor constructed in accordancewith and embodying the principles of my invention as now devised for thepractical application of my invention. I

In the drawings, 1 represents the float chamber of a carbureter, havingtherein a float 2 and a feed supply pipe 3 in communication therewith,anda carbureting chamber 4 having suitable air intake openings 5therein, an injector 6, a needle valve 7 and a butterfly valve 8, all ofconventional construction.

The float chamber is spaced a short distance from the carburetingchamber and is connected thereto by my invention. Said inventionincludes a fuel passage pipe 9 formed integrally with one wall of thefloat chamber and extending laterally therefrom Specification of LettersPatent.

Patented Aug. 20, 1918.

Serial No. 166,098.

through an opening in the adjacent wall of the carbureting chamber, andmeans surrounding the fuel passage pipe to heat the fuel as it passestherethrough. Surrounding the pip 9 is a plurality of electrical heatingcoils 10 which are embedded in suitable insulating material 11 of anydesired composition, said coils being supplied with electricity throughthe terminals or binding posts 12.

The heating coils and the insulating material surrounding the same areconsiderably shorter than the length of the pipe 9 and are disposedadjacent the connection of the latter with the float chamber. Thesecoils and their insulation are adapted to be protected by a tubularcasing or sleeve 13 which is formed integrally with one wall of thecarbureting chamber surrounding the opening therein. This sleeve is ofsufiicient diameter to receive said insulated coils and is ofapproximately the samelength as the latter so that when the parts areassembled the free end of said sleeve will engage the wall of the floatchamber to which it is secured.

In assembling the herein described parts the heating coils 10 aredisposed about the pipe 9 and the insulating material molded orotherwise disposed as shown in the drawing.

The carbureting chamber is then moved to engage its opening with the endportion of the pipe 9 which slides into the interior of said chamberuntil the wall of the latter engages the outer end of the insulatedcoils. This movement also disposes the sleeve 13 around the coils andtheir insulation, after which the float chamber and sleeve may besecured together. Finally the injector 6 and the needle valve 7 aredisposed in the end of the pipe 9 within the carbureting chamber.

In most of thepresent carburetors, it is necessary to use ahighlyvolatile oil such as gasolene or the like, but with my invention, theheavier volatile oils may be used as in the passage of the oil from thefloat chamber to the carbureting the oils are heated and thus readilyvaporized.

What is claimed it:

A carburetor comprising, in combination, a fuel supply pipe, a floatchamber communicating therewith, a carbureting chamber having an openingin one wall, a fuel passage ipe formed integrally with one wall of theoat chamber and projecting laterally, said pipe being extended into thecarbureting chamber through the opening therein, an

insulating acket surrounding the portion of said pipe adjacent itsconnection with the float chamber, a plurality of electrical heatingcoils embedded in said insulating material, a sleeve of greater diameterand shorter length than the pipe formed inte grally with the carburetingchamber around the opening therein and projecting laterally from onewall thereof, sald sleeve bein disposed around said insulating materialand coils by being slid thereover simultaneously with the engagement ofthe free end portion of the fuel passage pipe with the opening in thecarbureting chamber, the free end of said sleeve being disposed inabutting engagement with the wall of the float chamber and securedthereto, and a valve controlled spray means carried by the end of saidpipe Within said carbureting chamber.

In testimony that I claim the foregoing I have hereunto set my hand atMilwaukee, in the county of Milwaukee and State of Wisconsin.

EDWARD G. BUCHMANN.

